Cooling with Compact Absorption Chillers

Roland Hellmer

Vattenfall Europe Wrme AG Business Affairs, Berlin

170 MW

in total

Decentralize compact absorption and business opportunities

Overall technical concept for district heating based cooling

Compact absorption chiller and modular structure

Capacity range of the compact 50kW- absorption chiller

Innovative elements of the compact absorption chiller

Low temperature operation possible minimum 60C

High temperature spread in district heating (designed for 90/74C)

High pressure design PN10(16)

Compact unit, low-weight design

High efficiency (COP 0,8)

Dry re-cooling concept (up to 45C re-cooling temp.)

Cold water temperatures between 5C and 50C possible

Integrated vacuum system

Control design for total cooling asset (incl. re-cooler)

Minimum auxiliary energy demand

prototype

chiller

investment costs in comparison

prototype

chiller

prototype

chiller

investment costs in comparison

spe

cific

price

in

pe

r kW

traditional absorption chiller

com-

pression chiller

cooling capacity / kW

source:

Cost characteristics of the compact absorption chiller

Indoor climate and customer perception

60 % of interviewed persons made already

bad experience on ordinary air conditioning

Inconvenient air conditioning with extreme difference of indoor temperature to ambient air temperature

Drafty / dry / bad air

Air conditioning causes health problems

Our approach Cooling, but no air conditioning

Cold water supply ~16C

Fan coil technology for retrofit in existing buildings

Fan coil realization at Vattenfall

DC Compact: Compact absorption machines in pilot applications for warm District Cooling

Subject of the projectEuropean wide roll out of different technical concepts by using

compact absorption chillers (50 300 kW) for district heating based cooling. Development of individual business concepts for

cooling.

Utilities show in pilot applications the benefits of the compact

absorption chiller and create their own business cases for cooling.

National technical consultants are coached on the finding in pilots

in Germany and Sweden to support the utilities in the technical

setup of the pilot installations during the roll out phase

Pilots (examples):

Cooling in existing buildings (up to 300 kW) Hybrid cooling in data centers 20C distr. heat return temperature in winter

Project setup

up to 15 utilities with

pilot installationsCoaches

AGFW, supported by BS Nova Apparatebau GmbH Vattenfall Europe Wrme AG

Knowledge

transferNational*

technical consultants

AIT (AT) Hamreco (SWE) Midroc (SWE) RMN Ing. (GER, NL)

Technical

support

A2A (IT) Gteborg Energi (SE) Halmstads Energi och Milj (SE) Vattenfall (GER, SE) Nuon (NL)

Co-financed by European Commission Network of Eco-Innovativion Financiers

organized by AGFW

*): minimum 1 per country with pilots

Subject of the projectEuropean wide roll out of different technical concepts by using

compact absorption chillers (50 300 kW) for district heating based cooling. Development of individual business concepts for

cooling.

Utilities show in pilot applications the benefits of the compact

absorption chiller and create their own business cases for cooling.

National technical consultants are coached on the finding in pilots

in Germany and Sweden to support the utilities in the technical

setup of the pilot installations during the roll out phase

Pilots (examples):

Cooling in existing buildings (up to 300 kW) Hybrid cooling in data centers 20C distr. heat return temperature in winter

Project setup

up to 15 utilities with

pilot installationsCoaches

AGFW, supported by BS Nova Apparatebau GmbH Vattenfall Europe Wrme AG

Knowledge

transferNational*

technical consultants

AIT (AT) Hamreco (SWE) Midroc (SWE) RMN Ing. (GER, NL)

Technical

support

A2A (IT) Gteborg Energi (SE) Halmstads Energi och Milj (SE) Vattenfall (GER, SE) Nuon (NL)

Co-financed by European Commission Network of Eco-Innovativion Financiers

organized by AGFW

*): minimum 1 per country with pilots

up to 10 pilotsCoaches

AGFW (project partner), supported by BS Nova Apparatebau GmbH

Vattenfall Europe Wrme AG

Knowledge

transferNational

technical consultants

Project partners:

AIT (AT) Hamreco (SWE) Midroc (FIN,SWE) Politecnico (IT) RMN Ing. (GER, NL)

Technical

implementation

District heating customers in

AUT FIN GER IT NL SWE

organized by AGFW

Technical setup

support

district heating utilities coaches scientific bodies

DC Compact: Dissemination of information

DHC+10 pilots DHC+

Selected investors

EU-wide

investors & entrepreneurs

SWE

district heating

association

SWE

district heating

association

PL

district heating

association

PL

district heating

association

IT

district heating

association

IT

district heating

association

GER

district heating

association

GER

district heating

association

dissemination channels:

Performance assessment scheme Project website Networking conference Funding opportunity workshop Web matching platform

other

district heating

association

other

district heating

association

AUT

district heating

association

AUT

district heating

association

DK

district heating

association

DK

district heating

association

FIN

district heating

association

FIN

district heating

association

beyond

DC compact

entrepreneurs